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Scope:

FOREWORD

Accurate fabrication and
installation are essential to the performance of doors and frame
product. The requirements for manufacturing and installation are
given in the following Sections. The manufacturer is responsible
for producing doors and frame product that comply with these
Sections. However, it is important to recognize that proper
installation is not the responsibility of the hollow metal
manufacturer. For this reason, the requirements for installation
should be included in the Section of the specifications where
installation work is specified. It shall be the responsibility of
the general contractor, using experienced installers, to perform
the work outlined below. For additional information regarding
installation see NAAMM HMMA 840, "Guide Specifications for
Installation and Storage of Hollow Metal Doors and Frames". Hollow
metal doors are undersized to fit the door opening in the frame.
Final clearances and relationship between door and frame product
depend on the setting of the frame and the hanging and adjustment
of the door and hardware. Recommended clearances must be met to
ensure functional operation. Operating clearances for Commercial
Security, Detention Security, and Sound Control doors and frames
depend upon the requirements of specified hardware. See ANSI/NAAMM
HMMA 862, Guide Specifications for Commercial Security Hollow Metal
Doors and Frames, ANSI/NAAMM HMMA 863, Guide Specifications for
Detention Security Hollow Metal Doors and Frames, and ANSI/NAAMM
HMMA 865, Guide Specifications for Swinging Sound Control Hollow
Metal Doors and Frames. Operation of sound control doors and frames
is dependent on the clearances of individual manufacturer’s design.
The values stated in inch-pound units are to be regarded as the
standard. Corresponding metric values are included in the
parenthesis for reference purposes only.